kees wrote:

> > because we don't yet support non-zero initialization (as described in 
> > commit 
> > [5955a0f](https://github.com/llvm/llvm-project/commit/5955a0f9375a8c0b134eeb4a8de5155dcce7c94f))
> 
> I'm confused. We support non-zero init, and there are tests for non-zero init 
> in that commit. The commit message mentions dynamic initialization, but 
> that's not non-zero; that's "requires code to run at program startup".

I guess I'm confused about this test:

```
  // Flexible array initialization is currently not supported by constant
  // evaluation. Make sure we emit an error message, for now.
  constexpr A c = {1, 2, 3}; // expected-error {{constexpr variable 'c' must be 
initialized by a constant expression}}
```

Why is 1, 2, 3 not considered a constant expression here? (Am I confusing 
"integer constant expression" for something else?)


https://github.com/llvm/llvm-project/pull/84428
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